Sola/GEOS-Chem-adjoint-v35-note
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
389fdea5ae19f0bc6ba56683992d08d4ead79574
GEOS-Chem-adjoint-v35-note/code/modified/megan_mod.f
Xuesong (Steve) cffebb9cd6 Add files via upload
2018-08-28 00:37:54 -04:00

2194 lines
77 KiB
Fortran
Raw Blame History

! $Id: megan_mod.f,v 1.3 2012/09/05 22:35:07 yanko Exp $
MODULE MEGAN_MOD
!
!******************************************************************************
! Module MEGAN_MOD contains variables and routines specifying the
! algorithms that control the MEGAN inventory of biogenic emissions.
! (dsa, tmf, bmy, 11/17/04, 11/6/08)
!
! Module Variables:
! ============================================================================
! (1 ) T_DAY(R(MAXIJ,DAY_DIM): TS at each gridbox for last 8 3h periods
! (2 ) T_15(MAXIJ,NUM_DAYS) : Average daily TS over past NUM_DAYS days
! (3 ) T_15_AVG (MAXIJ) : 24h average TS over past NUM_DAYS days
! (4 ) DAY_DIM : number 3h periods in a day
! (5 ) NUM_DAYS : Number days in averaging periods
! (6 ) AEF_ISOP(MAXIJ) : Annual emission factor for isoprene
! (7 ) AEF_MONOT(MAXIJ) : Annual emission factor for monoterpenes
! (8 ) AEF_MBO(MAXIJ) : Annual emission factor for methyl butenol
! (9 ) AEF_OVOC(MAXIJ) : Annual emission factor for other biogenic VOCs
!
! Module Routines:
! ============================================================================
! (1 ) GET_EMISOP_MEGAN : Returns ISOPRENE Emission at a gridbox
! (2 ) GET_EMMONOT_MEGAN : Returns MONOTERPENE Emission at a gridbox
! (3 ) GET_EMMBO_MEGAN : Returns METHYL BUTENOL Emission at a gridbox
! (4 ) GET_EMOVOC_MEGAN : Returns other BVOC Emission at a gridbox
! (5 ) GET_AEF : Reads archived Annual emission factor (AEF)
! (6 ) GET_MEA : Calculates monthly exchanged activity (MEA)
! (7 ) GET_HEA_TL : Calculates hourly exchange activity factor (HEA_TL)
! with sensitivity to BOTH TEMPERATURE and LIGHT
! (for ISOP and MBO)
! (8 ) GET_HEA_T : Calculates hourly exchange activity factor (HEA_T)
! with sensitivity to TEMPERATURE ONLY
! (for all BVOC except ISOP and MBO)
! (9 ) UPDATE_T_DAY : Get TSKIN for each gridbox, update T_DAY,
! call once every 3h
! (10) UPDATE_T_15_AVG : Update T_15 and T_15_AVG, call once a day
! (11) INIT_MEGAN : Allocate + Initialize module variables
! (12) CLEANUP_MEGAN : Deallocate module variables
!
! GEOS-CHEM modules referenced by megan_mod.f
! ============================================================================
! (1 ) a3_read_mod.f : Module for reading A-3 fields
! (2 ) directory_mod.f : Module w/ GEOS-CHEM data & met field dirs
! (3 ) error_mod.f : Module w/ I/O error and NaN check routines
! (4 ) julday_mod.f : Module w/ astronomical Julian date routines
! (5 ) lai_mod.f : Module w/ routines & arrays to read AVHRR LAI
! (6 ) regrid_1x1_mod.f : Module w/ routines to regrid 1x1 data
! (8 ) time_mod.f : Module w/ routines for computing time & date
!
! Info about new MEGAN coefficients (tmf, 10/24/05)
! ============================================================================
! Updated coefficients in GET_HEA_T and GET_HEA_TL to account for the use of
! 'surface temperature' instead of 'leaf temperature' (as in User Guide).
! See Alex Guenther's email below:
!
! > Hi Paul,
! > I recall that your emissions were too high when you used the "skin"
! > temperature from your model- and I have seen that the "skin" temperature
! > from other models are much higher than canopy leaf temperatures.
! >
! > I am not sure which coefficients you are using in the temperature
! > algorithm but if you use
! > E_opt = 1.9, C_T1 = 76, C_T2 = 160, and T_opt = 316
! > then you should use air temperature but if you are using
! > E_opt =1.9, C_T1a =95, C_T1b = 230, T_opt =312.5
! > then you should be using leaf temperature to drive it.
! >
! > The top set of coefficients are based on results from a canopy scale
! > model that calculates leaf temperature (i.e. it is a fit of air
! > temperature vs canopy scale isoprene emission). So you can then say that
! > you are accounting for the difference between air and leaf temperature.
! > cheers,
! > Alex
!
! References:
! ============================================================================
! (1 ) Guenther, A., et al., A global model of natural volatile organic
! commpound emissions, J.Geophys. Res., 100, 8873-8892, 1995.
! (2 ) Wang, Y., D. J. Jacob, and J. A. Logan, Global simulation of
! tropospheric O3-Nox-hydrocarbon chemistry: 1. Model formulation, J.
! Geophys. Res., 103, D9, 10713-10726, 1998.
! (3 ) Guenther, A., B. Baugh, G. Brasseur, J. Greenberg, P. Harley, L.
! Klinger, D. Serca, and L. Vierling, Isoprene emission estimates and
! uncertanties for the Central African EXPRESSO study domain, J.
! Geophys. Res., 104, 30,625-30,639, 1999.
! (4 ) Guenther, A. C., T. Pierce, B. Lamb, P. Harley, and R. Fall, Natural
! emissions of non-methane volatile organic compounds, carbon
! monoxide, and oxides of nitrogen from North America, Atmos. Environ.,
! 34, 2205-2230, 2000.
! (5 ) Guenther, A., and C. Wiedinmyer, User's guide to Model of Emissions of
! Gases and Aerosols from Nature. http://cdp.ucar.edu. (Nov. 3, 2004)
! (6 ) Guenther, A., AEF for methyl butenol, personal commucation. (Nov, 2004)
!
! NOTES:
! (1 ) Original code (biogen_em_mod.f) by Dorian Abbot (6/2003). Updated to
! latest algorithm and modified for the standard code by May Fu
! (11/2004).
! (2 ) All emission are currently calculated using TS from DAO met field.
! TS is the surface air temperature, which should be carefully
! distinguished from TSKIN. (tmf, 11/20/2004)
! (3 ) In GEOS4, the TS used here are the T2M in the A3 files, read in
! 'a3_read_mod.f'.
! (4 ) Bug fix: change #if block to also cover GCAP met fields (bmy, 12/6/05)
! (5 ) Remove support for GEOS-1 and GEOS-STRAT met fields (bmy, 8/4/06)
! (6 ) Bug fix: Skip Feb 29th if GCAP in INIT_MEGAN (phs, 9/18/07)
! (7 ) Added routine GET_AEF_05x0666 to read hi-res AEF data for the GEOS-5
! 0.5 x 0.666 nested grid simulations (yxw, dan, bmy, 11/6/08)
! (8 ) Modified for adjoint by adj_group (dkh, 01/22/10)
!******************************************************************************
!
IMPLICIT NONE
!=================================================================
! MODULE PRIVATE DECLARATIONS -- keep certain internal variables
! and routines from being seen outside "megan_mod.f"
!=================================================================
! PRIVATE module variables
! adj_group: make DAY_DIM public now (dkh, 01/22/10)
!PRIVATE :: T_DAY, T_15, T_15_AVG, DAY_DIM, NUM_DAYS
PRIVATE :: T_DAY, T_15, T_15_AVG, NUM_DAYS
! adj_group: need to make the following public for checkpointing (dkh, 01/22/10)
PUBLIC :: DAY_DIM
PUBLIC :: GET_T_15_AVG
PUBLIC :: GET_T_DAY
! PRIVATE module functions
PRIVATE :: GET_MEA
PRIVATE :: GET_HEA_TL
PRIVATE :: GET_HEA_T
!=================================================================
! MODULE VARIABLES
!=================================================================
! Scalars
INTEGER :: DAY_DIM ! # of 1 or 3-hr periods/day
INTEGER, PARAMETER :: NUM_DAYS = 15
REAL*8, PARAMETER :: WM2_TO_UMOLM2S = 4.766d0
! Arrays
REAL*8, ALLOCATABLE :: T_DAY(:,:,:)
REAL*8, ALLOCATABLE :: T_15(:,:,:)
REAL*8, ALLOCATABLE :: T_15_AVG(:,:)
REAL*8, ALLOCATABLE :: AEF_ISOP(:,:)
REAL*8, ALLOCATABLE :: AEF_MONOT(:,:)
REAL*8, ALLOCATABLE :: AEF_MBO(:,:)
REAL*8, ALLOCATABLE :: AEF_OVOC(:,:)
! adj_group: Now include checkpt for MEGAN
REAL*4, ALLOCATABLE :: CHK_T_15_AVG(:,:,:)
REAL*4, ALLOCATABLE :: CHK_T_DAY(:,:,:)
!=================================================================
! MODULE ROUTINES -- follow below the "CONTAINS" statement
!=================================================================
CONTAINS
!------------------------------------------------------------------------------
FUNCTION GET_EMISOP_MEGAN( I, J, SUNCOS,
& TS, XNUMOL, Q_DIR, Q_DIFF )
& RESULT( EMISOP )
!
!******************************************************************************
! Subroutine GET_EMISOP_MEGAN computes ISOPRENE EMISSIONS in units of
! [atoms C/box] using the MEGAN inventory. (dsa, tmf, 9/03, 10/24/05)
!
! Function GET_EMISOP_MEGAN is called from "emissdr.f"
!
! Arguments as Input:
! ============================================================================
! (1 ) I (INTEGER ) : GEOS-CHEM longitude index
! (2 ) J (INTEGER ) : GEOS-CHEM latitude index
! (3 ) SUNCOS (REAL*8 ) : Cos( solar zenith angle )
! (4 ) TS (REAL*8 ) : Local surface air temperature [K]
! (5 ) XNUMOL (REAL*8 ) : Number of atoms C / kg C
! (6 ) Q_DIR (REAL*8 ) : Flux of direct PAR above canopy [W/m2]
! (7 ) Q_DIFF (REAL*8 ) : Flux of diffuser PAR above canopy [W/m2]
!
! References (see above for full citations):
! ============================================================================
! (1 ) Guenther et al, 1995
! (2 ) Wang, et al, 1998
! (3 ) Guenther et al, 1999
! (4 ) Guenther et al, 2000
! (5 ) Guenther et al, 2004
!
! Notes:
! (1 ) Original code by Dorian Abbot (9/2003). Updated to the latest
! algorithm and modified for the standard code by May Fu (11/20/04)
! (2 ) All MEGAN biogenic emission are currently calculated using TS from DAO
! met field. TS is the surface air temperature, which should be
! carefully distinguished from TSKIN. (tmf, 11/20/04)
!******************************************************************************
!
! References to F90 modules
USE LAI_MOD, ONLY : ISOLAI, MISOLAI, PMISOLAI, DAYS_BTW_M
# include "CMN_SIZE" ! Size parameters
! Arguments
INTEGER, INTENT(IN) :: I, J
REAL*8, INTENT(IN) :: SUNCOS, TS, XNUMOL, Q_DIR, Q_DIFF
! Local variables
INTEGER :: IJLOOP
REAL*8 :: MEA, DEA, HEA_TL
REAL*8 :: D_BTW_M, Q_DIR_2, Q_DIFF_2
! Function return value
REAL*8 :: EMISOP
!=================================================================
! GET_EMISOP_MEGAN begins here!
!=================================================================
! Initialize
EMISOP = 0.d0
MEA = 0.d0
DEA = 0.d0
HEA_TL = 0.d0
! Number of days between MISOLAI and PMISOLAI
D_BTW_M = DBLE( DAYS_BTW_M )
! 1-D array index
IJLOOP = ( (J-1) * IIPAR ) + I
! Convert Q_DIR and Q_DIFF from (W/m2) to (micromol/m2/s)
Q_DIR_2 = Q_DIR * WM2_TO_UMOLM2S
Q_DIFF_2 = Q_DIFF * WM2_TO_UMOLM2S
!---------------------------------------------------
! Do only during day and over continent
! Only interested in terrestrial biosphere (pip)
!---------------------------------------------------
IF ( SUNCOS > 0d0 ) THEN
! If (local LAI != 0 .AND. baseline emission !=0 )
IF ( ISOLAI(I,J) * AEF_ISOP(I,J) > 0d0 ) THEN
! Hourly exchange activitiy for temp & light
HEA_TL = GET_HEA_TL( TS, T_15_AVG(I,J),
& ISOLAI(I,J), SUNCOS,
& Q_DIR_2, Q_DIFF_2 )
! Daily exchange activity. Alex Guenther advised us
! to set DEA = 1.d0 for now (tmf, 10/24/05)
DEA = 1.d0
! Monthly exchange activity
MEA = GET_MEA( MISOLAI(I,J), PMISOLAI(I,J), D_BTW_M )
ELSE
! If it's night or over ocean, set activity factors to zero
HEA_TL = 0.d0
DEA = 0.d0
MEA = 0.d0
ENDIF
! Isoprene emission is the product of all these
EMISOP = AEF_ISOP(I,J) * HEA_TL * DEA * MEA
! Convert from [kg/box] to [atoms C/box]
EMISOP = EMISOP * XNUMOL
ENDIF
! return to calling program
END FUNCTION GET_EMISOP_MEGAN
!------------------------------------------------------------------------------
FUNCTION GET_EMMONOT_MEGAN( I, J, TS, XNUMOL ) RESULT( EMMONOT )
!
!******************************************************************************
! Subroutine GET_EMMONOT_MEGAN computes MONOTERPENE EMISSIONS in units of
! [atoms C/box] using the MEGAN inventory. (dsa, tmf, 9/03, 11/20/04)
!
! Function GET_EMMONOT_MEGAN is called from "emissdr.f"
!
! Arguments as Input:
! ============================================================================
! (1 ) I (INTEGER ) : GEOS-CHEM longitude index
! (2 ) J (INTEGER ) : GEOS-CHEM latitude index
! (3 ) TS (REAL*8 ) : Local surface air temperature (K)
! (4 ) XNUMOL (REAL*8 ) : Number of atoms C / kg C
!
! References (see above for full citations):
! ============================================================================
! (1 ) Guenther et al, 1995
! (2 ) Wang, et al, 1998
! (3 ) Guenther et al, 1999
! (4 ) Guenther et al, 2000
! (5 ) Guenther et al, 2004
!
! Notes:
! (1 ) Original code by Dorian Abbot (9/2003). Updated to the latest
! algorithm and modified for the standard code by May Fu (11/20/04)
! (2 ) All MEGAN biogenic emission are currently calculated using TS from DAO
! met field. TS is the surface air temperature, which should be
! carefully distinguished from TSKIN. (tmf, 11/20/04)
!******************************************************************************
!
! References to F90 modules
USE LAI_MOD, ONLY : ISOLAI, MISOLAI, PMISOLAI, DAYS_BTW_M
# include "CMN_SIZE" ! Size parameters
! Arguments
INTEGER, INTENT(IN) :: I, J
REAL*8, INTENT(IN) :: TS, XNUMOL
! Local variable
INTEGER :: IJLOOP
REAL*8 :: MEA, DEA, HEA_T, D_BTW_M
! Function return value
REAL*8 :: EMMONOT
!=================================================================
! GET_EMMONOT_MEGAN begins here!
!=================================================================
! Initialize
EMMONOT = 0.d0
MEA = 0.d0
DEA = 0.d0
HEA_T = 0.d0
! Number of days between MISOLAI and PMISOLAI
D_BTW_M = DBLE( DAYS_BTW_M )
!-----------------------------------------------------
! Only interested in terrestrial biosphere (pip)
! If (local LAI != 0 .AND. baseline emission !=0 )
!-----------------------------------------------------
IF ( ISOLAI(I,J) * AEF_MONOT(I,J) > 0d0 ) THEN
! Hourly exchange activity (temp only)
HEA_T = GET_HEA_T( TS, T_15_AVG(I,J) )
! Daily exchange activity. Alex Guenther advised us to
! set DEA = 1.d0 for now (tmf, 10/24/05)
DEA = 1.d0
! Monthly exchange activity
MEA = GET_MEA( MISOLAI(I,J), PMISOLAI(I,J), D_BTW_M )
ELSE
! Otherwise set all activities to zero
HEA_T = 0.d0
DEA = 0.d0
MEA = 0.d0
ENDIF
! Monoterpene emissions [kg/box]
EMMONOT = AEF_MONOT(I,J) * HEA_T * DEA * MEA
! Convert from [kg/box] to [atoms C/box]
EMMONOT = EMMONOT * XNUMOL
! Return to calling program
END FUNCTION GET_EMMONOT_MEGAN
!------------------------------------------------------------------------------
FUNCTION GET_EMMBO_MEGAN( I, J, SUNCOS,
& TS, XNUMOL, Q_DIR, Q_DIFF )
& RESULT( EMMBO )
!
!******************************************************************************
! Subroutine GET_EMMBO_MEGAN computes METHYLBUTENOL EMISSIONS in units of
! [atoms C/box] using the MEGAN inventory. (dsa, tmf, bmy, 9/03, 10/24/05)
!
! Function GET_EMMBO_MEGAN is called from "emissdr.f"
!
! Arguments as Input:
! ============================================================================
! (1 ) I (INTEGER ) : GEOS-CHEM longitude index
! (2 ) J (INTEGER ) : GEOS-CHEM latitude index
! (3 ) TS (REAL*8 ) : Local surface air temperature (K)
! (4 ) XNUMOL (REAL*8 ) : Number of atoms C / kg C
! (5 ) Q_DIR (REAL*8 ) : flux of direct PAR above canopy (W m-2)
! (6 ) Q_DIFF (REAL*8 ) : flux of diffuser PAR above canopy (W m-2)
!
! References (see above for full citations):
! ============================================================================
! (1 ) Guenther et al, 1995
! (2 ) Wang et al, 1998
! (3 ) Guenther et al, 1999
! (4 ) Guenther et al, 2000
! (5 ) Guenther et al, 2004
!
! NOTES:
! (1 ) Original code by Dorian Abbot (9/2003). Updated to the latest
! algorithm and modified for the standard code by May Fu (11/20/04)
! (2 ) All MEGAN biogenic emission are currently calculated using TS from DAO
! met field. TS is the surface air temperature, which should be
! carefully distinguished from TSKIN. (tmf, 11/20/04)
!******************************************************************************
!
! References to F90 modules
USE LAI_MOD, ONLY : ISOLAI, MISOLAI, PMISOLAI, DAYS_BTW_M
# include "CMN_SIZE" ! Size parameters
! Arguments
INTEGER, INTENT(IN) :: I, J
REAL*8, INTENT(IN) :: SUNCOS, TS, XNUMOL, Q_DIR, Q_DIFF
! Local variable
REAL*8 :: MEA, DEA, HEA_TL
REAL*8 :: D_BTW_M, Q_DIR_2, Q_DIFF_2
! Function return value
REAL*8 :: EMMBO
!=================================================================
! GET_EMMBO_MEGAN begins here!
!=================================================================
! Initialize
EMMBO = 0.d0
MEA = 0.d0
DEA = 0.d0
HEA_TL = 0.d0
! Number of days between MISOLAI and PMISOLAI
D_BTW_M = DBLE( DAYS_BTW_M )
! Convert Q_DIR and Q_DIFF from [W/m2] to [umol/m2/s]
Q_DIR_2 = Q_DIR * WM2_TO_UMOLM2S
Q_DIFF_2 = Q_DIFF * WM2_TO_UMOLM2S
!-------------------------------------------------
! Do only during day and over continent
! Only interested in terrestrial biosphere (pip)
!-------------------------------------------------
IF ( SUNCOS > 0d0 ) THEN
! If local LAI > 0 and baseline emission > 0 ...
IF ( ISOLAI(I,J) * AEF_MBO(I,J) > 0d0 ) THEN
! Hourly exchange activity (based on temp & light)
HEA_TL = GET_HEA_TL( TS, T_15_AVG(I,J),
& ISOLAI(I,J), SUNCOS,
& Q_DIR_2, Q_DIFF_2 )
! Daily exchange activity. Alex Guenther advised us
! to set DEA = 1.d0 for now (tmf, 11/20/05)
DEA = 1.d0
! Monthly exchange activity
MEA = GET_MEA( MISOLAI(I,J), PMISOLAI(I,J), D_BTW_M )
ELSE
! Otherwise set activities to zero
HEA_TL = 0.d0
DEA = 0.d0
MEA = 0.d0
ENDIF
! MBO emissions in [kg/box]
EMMBO = AEF_MBO(I,J) * HEA_TL * DEA * MEA
! Convert from [atoms C/box] to [kg/box]
EMMBO = EMMBO * XNUMOL
ENDIF
! Return to calling program
END FUNCTION GET_EMMBO_MEGAN
!------------------------------------------------------------------------------
FUNCTION GET_EMOVOC_MEGAN( I, J, TS, XNUMOL ) RESULT( EMOVOC )
!
!******************************************************************************
! Subroutine GET_EMOVOC_MEGAN computes other BVOC EMISSIONS in units of
! [atoms C/box] using the MEGAN inventory. (dsa, tmf, 9/03, 11/20/04)
!
! Function GET_EMOVOC_MEGAN is called from "emissdr.f"
!
! Arguments as Input:
! ============================================================================
! (1 ) I (INTEGER ) : GEOS-CHEM longitude index
! (2 ) J (INTEGER ) : GEOS-CHEM latitude index
! (2 ) TS (REAL*8 ) : Local surface air temperature (K)
! (3 ) XNUMOL (REAL*8 ) : Number of atoms C / kg C
!
! References (see above for full citations):
! ============================================================================
! (1 ) Guenther et al, 1995
! (2 ) Wang et al, 1998
! (3 ) Guenther et al, 1999
! (4 ) Guenther et al, 2000
! (5 ) Guenther et al, 2004
! (6 ) Guenther pers.comm, 2004
!
! NOTES:
! (1 ) Original code by Dorian Abbot (9/2003). Updated to the latest
! algorithm and modified for the standard code by May Fu (11/20/04)
! (2 ) All MEGAN biogenic emission are currently calculated using TS from DAO
! met field. TS is the surface air temperature, which should be
! carefully distinguished from TSKIN. (tmf, 11/20/04)
!******************************************************************************
!
! References to F90 modules
USE LAI_MOD, ONLY : ISOLAI, MISOLAI, PMISOLAI, DAYS_BTW_M
# include "CMN_SIZE" ! MAXIJ
! Arguments
INTEGER, INTENT(IN) :: I, J
REAL*8, INTENT(IN) :: TS, XNUMOL
! Function return value
REAL*8 :: EMOVOC
! Local variable
REAL*8 :: MEA, DEA, HEA_T, D_BTW_M
!=================================================================
! GET_EMOVOC_MEGAN begins here!
!=================================================================
! Initialize
EMOVOC = 0.d0
MEA = 0.d0
DEA = 0.d0
HEA_T = 0.d0
! Number of days between MISOLAI and PMISOLAI
D_BTW_M = DBLE( DAYS_BTW_M )
!--------------------------------------------------
! Only interested in terrestrial biosphere (pip)
! If (local LAI != 0 .AND. baseline emission !=0 )
!--------------------------------------------------
IF ( ISOLAI(I,J) * AEF_OVOC(I,J) > 0d0 ) THEN
! Hourly exchange activity (temp only)
HEA_T = GET_HEA_T( TS, T_15_AVG(I,J ) )
! Daily exchange activity. Alex Guenther advised us
! to set DEA = 1.d0 for now (tmf, 10/24/05)
DEA = 1.d0
! Monthly exchange activity
MEA = GET_MEA( MISOLAI(I,J), PMISOLAI(I,J), D_BTW_M )
ELSE
! Otherwise set activities to zero
HEA_T = 0.d0
DEA = 0.d0
MEA = 0.d0
ENDIF
! OVOC emissions [kg/box]
EMOVOC = AEF_OVOC(I,J) * HEA_T * DEA * MEA
! Convert from [kg/box] to [atoms C/box]
EMOVOC = EMOVOC * XNUMOL
! return to calling program
END FUNCTION GET_EMOVOC_MEGAN
!------------------------------------------------------------------------------
SUBROUTINE UPDATE_T_DAY
!
!******************************************************************************
! Subroutine UPDATE_T_DAY must be called every time the A-3 fields are
! updated. Each 3h TS value for each gridbox is moved up one spot in the
! matrix and the current value is put in the last spot. (dsa, 6/17/03)
!
! NOTES:
! (1 ) All MEGAN biogenic emission are currently calculated using TS from DAO
! met field. TS is the surface air temperature, which should be
! carefully distinguished from TSKIN. (tmf, 11/20/04)
! (2 ) In GEOS4, TS are originally T2M in the A3 files, read in
! 'a3_read_mod.f'.
!******************************************************************************
!
# include "CMN_SIZE" ! Size parameters
! Local Variables
INTEGER :: I, J, D
! External functions
REAL*8, EXTERNAL :: XLTMMP
!=================================================================
! UPDATE_T_DAY begins here!
!=================================================================
!$OMP PARALLEL DO
!$OMP+DEFAULT( SHARED )
!$OMP+PRIVATE( I, J, D )
DO J = 1, JJPAR
DO I = 1, IIPAR
! Move each day up
DO D = DAY_DIM, 2, -1
T_DAY(I,J,D) = T_DAY(I,J,D-1)
ENDDO
! Store
T_DAY(I,J,1) = XLTMMP(I,J)
ENDDO
ENDDO
!$OMP END PARALLEL DO
! return to calling program
END SUBROUTINE UPDATE_T_DAY
!------------------------------------------------------------------------------
SUBROUTINE UPDATE_T_15_AVG
!
!******************************************************************************
! Subroutine UPDATE_T_15_AVG should be called at the beginning of each day.
! It loops through the gridboxes doing the following:
! 1. Average T_DAY over the 8 TS values during the day.
! 2. Push the daily average TS values through T_15, throwing out the
! oldest and putting the newest (the T_DAY average) in the last spot
! 3. Get T_15_AVG by averaging T_15 over the 15 day period.
! (dsa, tmf, bmy, 6/17/03, 10/24/05)
!
! NOTES:
! (1 ) All MEGAN biogenic emission are currently calculated using TS from DAO
! met field. TS is the surface air temperature, which should be
! carefully distinguished from TSKIN. (tmf, 11/20/04)
! (2 ) In GEOS4, TS are originally T2M in the A3 files, read in
! 'a3_read_mod.f'.
!******************************************************************************
!
IMPLICIT NONE
# include "CMN_SIZE" ! MAXIJ
! Local Variables
INTEGER :: I, J, D
REAL*8 :: D_DIM, D_DAYS, TMP_T
!=================================================================
! UPDATE_T_15_AVG begins here!
!=================================================================
! Convert to REAL*8
D_DIM = DBLE( DAY_DIM )
D_DAYS = DBLE( NUM_DAYS )
! Loop over grid boxes
!$OMP PARALLEL DO
!$OMP+DEFAULT( SHARED )
!$OMP+PRIVATE( I, J, D, TMP_T )
DO J = 1, JJPAR
DO I = 1, IIPAR
! Average T_DAY over the 8 TS values during the day.
TMP_T = SUM( T_DAY(I,J,:) ) / D_DIM
! Push the daily average TS values through T_15,
! throwing out the oldest
DO D = NUM_DAYS, 2, -1
T_15(I,J,D) = T_15(I,J,D-1)
ENDDO
! Put the newest daily average TS value in the first spot
T_15(I,J,1) = TMP_T
! Get T_15_AVG by averaging T_15 over the 15 day period.
T_15_AVG(I,J) = SUM( T_15(I,J,:) ) / D_DAYS
ENDDO
ENDDO
!$OMP END PARALLEL DO
! Return to calling program
END SUBROUTINE UPDATE_T_15_AVG
!------------------------------------------------------------------------------
! NOTE: This subroutine is not called by anything, so commment out for now.
! (bmy, 10/24/05)
!
! SUBROUTINE MEGAN_FACTORS( I, J, SUNCOS, TS,
! & XNUMOL, Q_DIR, Q_DIFF, MEA,
! & DEA, HEA_T, HEA_TL )
!!
!!******************************************************************************
!! Subroutine MEGAN_FACTORS computes the emission activity factors in
!! the MEGAN inventory. (dsa, tmf, bmy, 9/03, 10/24/05)
!!
!! Function GET_EMISOP_MEGAN is called from "emissdr.f"
!!
!! Arguments as Input:
!! ============================================================================
!! (1 ) I (INTEGER ) : GEOS-CHEM longitude index
!! (2 ) J (INTEGER ) : GEOS-CHEM latitude index
!! (3 ) SUNCOS (REAL*8 ) : 1-D array of cos( solar zenith angle )
!! (4 ) TS (REAL*8 ) : Local surface air temperature (K)
!! (5 ) XNUMOL (REAL*8 ) : Number of atoms C / kg C
!! (6 ) Q_DIR (REAL*8 ) : flux of direct PAR above canopy (W m-2)
!! (7 ) Q_DIFF (REAL*8 ) : flux of diffuser PAR above canopy (W m-2)
!!
!! Arguments as Output:
!! ============================================================================
!! (9 ) MEA (REAL*8 ) : MEGAN monthly emission factor
!! (10) DEA (REAL*8 ) : MEGAN daily emission factor
!! (11) HEA_T (REAL*8 ) : MEGAN hourly emission factor as F(T)
!! (12) HEA_TL (REAL*8 ) : MEGAN hourly emission factor as F(T,light)
!!
!! References (see above for full citations):
!! ============================================================================
!! (1 ) Guenther et al, 1995
!! (2 ) Wang et al, 1998
!! (3 ) Guenther et al, 1999
!! (4 ) Guenther et al, 2000
!! (5 ) Guenther et al, 2004
!!
!! NOTES:
!! (1 ) Original code by Dorian Abbot (9/2003). Updated to the latest
!! algorithm and modified for the standard code by May Fu (11/20/04)
!! (2 ) All MEGAN biogenic emission are currently calculated using TS from DAO
!! met field. TS is the surface air temperature, which should be
!! carefully distinguished from TSKIN. (tmf, 11/20/04)
!!
!!******************************************************************************
!!
! ! References to F90 modules
! USE LAI_MOD, ONLY : ISOLAI, MISOLAI, PMISOLAI, DAYS_BTW_M
!
!# include "CMN_SIZE" ! Size parameters
!
! ! Arguments
! INTEGER, INTENT(IN) :: I,J
! REAL*8, INTENT(IN) :: SUNCOS(MAXIJ)
! REAL*8, INTENT(IN) :: TS, XNUMOL, Q_DIR, Q_DIFF
! REAL*8, INTENT(OUT) :: MEA, DEA, HEA_T, HEA_TL
!
! ! Local variables
! INTEGER :: IJLOOP
! REAL*8 :: D_BTW_M, Q_DIR_2, Q_DIFF_2
!
! !=================================================================
! ! MEGAN_FACTORS begins here!
! !=================================================================
!
! ! 1-D array index
! IJLOOP = ( (J-1) * IIPAR ) + I
!
! ! Initialize
! MEA = 0d0
! DEA = 0d0
! HEA_T = 0d0
! HEA_TL = 0d0
!
! ! Number of days between MISOLAI and PMISOLAI
! D_BTW_M = DBLE( DAYS_BTW_M )
!
! ! cCnvert Q_DIR and Q_DIFF from [W/m2] to [umol/m2/s]
! Q_DIR_2 = Q_DIR * WM2_TO_UMOLM2S
! Q_DIFF_2 = Q_DIFF * WM2_TO_UMOLM2S
!
! !---------------------------------------------------
! ! If local LAI > 0 and baseline emission > 0 ...
! !---------------------------------------------------
! IF ( ISOLAI(I,J) * AEF_ISOP(I,J) > 0d0 ) THEN
!
! ! Hourly exchange factor (temp only)
! HEA_T = GET_HEA_T( TS, T_15_AVG(I,J) )
!
! ! For light sensitive species: do only during day
! IF ( SUNCOS(IJLOOP) > 0d0 ) THEN
!
! ! Hourly exchange factor (temp & light)
! HEA_TL = GET_HEA_TL( TS, T_15_AVG(I,J),
! & ISOLAI(I,J), SUNCOS(IJLOOP),
! & Q_DIR_2, Q_DIFF_2 )
! ELSE
!
! ! Otherwise set to zero
! HEA_TL = 0.d0
!
! ENDIF
!
! ! Daily exchange activity. Alex Guenther suggests
! ! that we set DEA = 1.d0 for now
! DEA = 1.d0
!
! ! Monthly exchange activity
! MEA = GET_MEA( MISOLAI(I,J), PMISOLAI(I,J), D_BTW_M )
!
! ELSE
!
! ! Otherwise set activities to zero
! HEA_T = 0.d0
! HEA_TL = 0.d0
! DEA = 0.d0
! MEA = 0.d0
!
! ENDIF
!
! ! Return to calling program
! END SUBROUTINE MEGAN_FACTORS
!
!------------------------------------------------------------------------------
FUNCTION GET_HEA_TL( T, PT_15, LAI,
& SUNCOS1, Q_DIR_2, Q_DIFF_2 ) RESULT( HEA_TL )
!
!******************************************************************************
! Computes the hourly exchange activity factor (HEA_TL) with sensitivity to
! both TEMPERATHRE and LIGHT for ISOP emission. (tmf, 11/18/04, 10/24/05)
!
! HEA_TL = C_T * C_PPFD
!
! C_T: Effect of temperature on leaf isoprene emission, including effect
! of average temperature over previous 15 days, based on Eq 5abc
! from Guenther et al. (1999)
!
! C_PPFD: Effect of increasing PPFD up to a saturation point, where emission
! level off, based on Eq 4abc from Guenther et al. (1999)
! In addition, a 5 layered canopy model based on Eqs 12-16
! from Guenther et al. (1995) is included to correct for light
! attenuation in the canopy.
!
! Function GET_HEA_TL is called from GET_EMISOP_MEGAN of "megan_mod.f"
!
! Arguments as Input:
! ============================================================================
! (1 ) T (REAL*8 ) : Current leaf temperature, the surface air temp
! field (TS) is assumed equivalent to the leaf
! temperature over forests.
! (2 ) PT_15 (REAL*8 ) : Average leaf tempearture over the past 15 days
! (3 ) LAI (REAL*8 ) : cumulative leaf area index above leaf
! (4 ) SUNCOS1 (REAL*8 ) : Cosine of solar zenith angle
! (5 ) Q_DIR_2 (REAL*8 ) : flux of direct PAR above canopy [umol m-2 s-1]
! (6 ) Q_DIFF_2(REAL*8 ) : flux of diffuser PAR above canopy [umol m-2 s-1]
!
! References (see above for full citations):
! ============================================================================
! (1 ) Guenther et al, 1995
! (2 ) Wang et al, 1998
! (3 ) Guenther et al, 1999
! (5 ) Guenther et al, 2004
!
! NOTES:
! (1 ) Original code by Dorian Abbot (9/2003). Updated to the latest
! algorithm and modified for the standard code by May Fu (11/2004)
! (2 ) Algorithm is based on Guenther (1999) instead of the latest User's
! Guide since the User's Guide does not contain sensitivity to
! temperature in the past 15 days. (tmf, 11/19/04)
! (3 ) Algorithm updated to Users' Guide as of Nov 3, 2004. Sensitivity on
! temperature history is included in DEA from GET_DEA. (tmf, 11/19/04)
! (4 ) Significant modifications have been made to the canopy model in
! accordence with the MEGAN isoprene emissions model from Guenther et
! al. (unpublished as of 6/9/03) (dsa, 6/5/03)
! (5 ) All MEGAN biogenic emission are currently calculated using TS from DAO
! met field. TS is the surface air temperature, which should be
! carefully distinguished from TSKIN. (tmf, 11/20/04)
! (6 ) Switch back to Guenther et al. (1999) algorithm and account for
! tempearture history in HEA. This is accompanied by setting DEA = 1.
! (Alex Guenther, personal communication, 11/25/04)
!******************************************************************************
!
# include "CMN_GCTM" ! Physical constants
! Arguments
REAL*8, INTENT(IN) :: T, PT_15
REAL*8, INTENT(IN) :: LAI, SUNCOS1, Q_DIR_2, Q_DIFF_2
! Function return value
REAL*8 :: HEA_TL
! Local Variables
!-----------------------------------------------------------------
! Based on Eq 5a, 5b, and 5c in Guenther et al. (1999)
!-----------------------------------------------------------------
! C_T: Effect of temperature on leaf BVOC emission, including
! effect of average temperature over previous 15 days, based on
! Eq 5a, 5b, 5c from Guenther et al, 1999.
REAL*8 :: C_T
! E_OPT: maximum normalized emission capacity
REAL*8 :: E_OPT
! T_OPT: temperature at which E_OPT occurs
REAL*8 :: T_OPT
! X: variable related to temp.
REAL*8 :: X
! CT1, CT2: energy of activation and deactivation, respectively
REAL*8 :: CT1, CT2
! R - ideal gas constant (J mol-1 K-1)
REAL*8, PARAMETER :: R = 8.314d-3
!-----------------------------------------------------------------
! Canopy model variables (Eqs 12-16 from Guenther et al, 1995)
!-----------------------------------------------------------------
! C_PPFD: Effect of increasing PPFD up to a saturation point, where
! emissions level off, based on Eq 4abc from Guenther et al. (1999)
! In addition, a 5 layered canopy model based on Eqs 12-16
! from Guenther et al. (1995) is included to correct for light
! attenuation in the canopy.
REAL*8 :: C_PPFD
! LAYERS: number of layers in canopy model
INTEGER, PARAMETER :: LAYERS = 5
! A: mean leaf-Sun angle, 60 degrees represents a
! spherical leaf angle distribution
REAL*8, PARAMETER :: A = 6.0d1 * PI / 1.8d2
! WEIGHTGAUSS : weights for gaussian integration
REAL*8, PARAMETER :: WEIGHTGAUSS(LAYERS) = (/ 1.1846d-1,
& 2.3931d-1,
& 2.8444d-1,
& 2.3931d-1,
& 1.1846d-1 /)
! DISTGAUSS: points to evaluate fcn for gaussian integration
REAL*8, PARAMETER :: DISTGAUSS(LAYERS) = (/ 4.6910d-2,
& 2.3075d-1,
& 5.0000d-1,
& 7.6924d-1,
& 9.5308d-1 /)
! SCAT: Scattering coefficient
REAL*8, PARAMETER :: SCAT = 2.0d-1
! REFLD: Reflection coefficient for diffuse light
REAL*8, PARAMETER :: REFLD = 5.7d-2
! CLUSTER: clustering coefficient (accounts for leaf clumping
! influence on mean projected leaf area in the direction
! of the sun's beam) use 0.85 for default
REAL*8, PARAMETER :: CLUSTER = 8.5d-1
! NORMAL_FACTOR : C_PPFD calculated with LAI = 5, and above canopy
! total PPFD = 1500 umol/m2/s, and Q_DIFF = 0.2 * above canopy total
! PPFD. May Fu calculated this to be 1.8967d0
REAL*8, PARAMETER :: NORMAL_FACTOR = 1.8967d0
! F_SUN: Fraction leaves sunlit
REAL*8 :: F_SUN
! F_SHADE: Fraction leaves shaded
REAL*8 :: F_SHADE
! LAI_DEPTH: Cumulative LAI above current layer
REAL*8 :: LAI_DEPTH
! Q_SUN: Flux density of PAR on sunny leaves [umol/m2/s]
REAL*8 :: Q_SUN
! Q_SHADE: Flux density of PAR on shaded leaves [umol/m2/s]
REAL*8 :: Q_SHADE, Q_SHADE_1, Q_SHADE_2
! KB: Extinction coefficient for black leaves for direct (beam)
REAL*8 :: KB, KBP
! KD: Extinction coefficient for black leaves for diffuse light
REAL*8 :: KD, KDP
REAL*8 :: REFLB
! C_P_SUN: C_PPFD at layer I for sunlit leaves
REAL*8 :: C_P_SUN
! C_P_SHADE: C_PPFD at layer I for shaded leaves
REAL*8 :: C_P_SHADE
! C_PPFD_I : C_PPFD at layer I
REAL*8 :: C_PPFD_I
! Empirical functions (Eq 4a, 4b, 4c from Guenther et al, 1999)
REAL*8 :: ALPHA, CL
! ??
REAL*8 :: P
! Index for layers
INTEGER :: I
!=================================================================
! GET_HEA_TL begins here!
!=================================================================
!-----------------------------------------------------------------
! Compute C_T
!
! NOTES:
! (1) Algorithm is from Eq 5a, 5b, and 5c in Guenther et al, 1999
! (2) Alex Guenther suggests that we set DEA=1 for now
! (3) E_OPT and T_OPT depend on PT_15 according to Eq 5b and 5c
!-----------------------------------------------------------------
! E_OPT: maximum normalized emission capacity
E_OPT = 1.9d0 * EXP( 1.25d-1 * ( PT_15 - 3.01d2 ) )
! T_OPT: temperature at which E_OPT occurs
T_OPT = 3.16d2 + ( 5.0d-1 * ( PT_15 - 3.01d2 ) )
! Energy of activation
CT1 = 76d0
! Energy of deactivation
CT2 = 160d0
! Variable related to temperature
X = ( 1.d0/T_OPT - 1.d0/T ) / R
! C_T: Effect of temperature on leaf BVOC emission, including
! effect of average temperature over previous 15 days, based on
! Eq 5a, 5b, 5c from Guenther et al, 1999.
C_T = E_OPT * CT2 * EXP( CT1 * X ) /
& ( CT2 - CT1 * ( 1.d0 - EXP( CT2 * X ) ) )
!-----------------------------------------------------------------
! Compute C_PPFD
!-----------------------------------------------------------------
! Initialize
C_PPFD = 0.d0
! 0.5 and 0.8 assume a spherical leaf-angle distribution
KB = 0.5d0 * CLUSTER / SUNCOS1
KD = 0.8d0 * CLUSTER
P = SQRT( 1.d0 - SCAT )
REFLB = 1.d0 -
& EXP(-2.d0*KB * ( 1.d0-P ) / ( 1.d0+P ) / ( 1.d0+KB ) )
KBP = KB * P
KDP = KD * P
! 5-layer Gaussian integration over canopy
DO I = 1, LAYERS
! Cumulative LAI above layer I
LAI_DEPTH = LAI * DISTGAUSS( I )
! Fraction sun and shade leaves at layer I
F_SUN = EXP( -KB * LAI_DEPTH )
F_SHADE = 1.d0 - F_SUN
! For PAR on shaded leaves
Q_SHADE_1 = Q_DIFF_2 * KDP * ( 1.d0 - REFLD ) *
& EXP( -KDP * LAI_DEPTH )
! For PAR on shaded leaves
Q_SHADE_2 = Q_DIR_2 * ( KBP * ( 1.d0 - REFLB ) *
& EXP( -KBP * LAI_DEPTH ) - KB * ( 1.d0 - SCAT ) *
& EXP( -KB * LAI_DEPTH ) )
! PAR on shaded leaves
Q_SHADE = ( Q_SHADE_1 + Q_SHADE_2 ) / ( 1.d0 - SCAT )
! PAR on sunlit leaves
Q_SUN = Q_SHADE + KB * Q_DIR_2
! Update C_P_SUN and C_P_SHADE at layer I
! The following already accounts for canopy attenuation
! (Guenther et al, 1999)
ALPHA = 1.0d-3 + ( 8.5d-4 ) * LAI_DEPTH
CL = ( 1.42d0 ) * EXP( -( 3.0d-1 ) * LAI_DEPTH )
C_P_SUN = ALPHA * CL * Q_SUN /
& SQRT( 1.d0 + ALPHA*ALPHA * Q_SUN*Q_SUN )
C_P_SHADE = ALPHA * CL * Q_SHADE /
& SQRT( 1.d0 + ALPHA*ALPHA * Q_SHADE*Q_SHADE )
! Update C_PPFD_I at layer I
C_PPFD_I = F_SUN * C_P_SUN + F_SHADE * C_P_SHADE
! Add on to total C_PPFD
C_PPFD = C_PPFD + WEIGHTGAUSS( I ) * C_PPFD_I * LAI
ENDDO
! Finally, HEA_TL. Prevent negative values.
HEA_TL = MAX( C_T * C_PPFD / NORMAL_FACTOR, 0d0 )
! return to calling program
END FUNCTION GET_HEA_TL
!------------------------------------------------------------------------------
FUNCTION GET_HEA_T( T, PT_15 ) RESULT( HEA_T )
!
!******************************************************************************
! Computes the hourly exchange activity factor (HEA_T) with sensitivity
! to only TEMPERATHRE for all BVOC emission except ISOP.
! (tmf, bmy, 11/25/04, 10/24/05)
!
! Function GET_HEA_T is called from GET_EMISOP_MEGAN of "megan_mod.f"
!
! Arguments as Input:
! ============================================================================
! (1 ) T (REAL*8 ) : Current leaf temperature, the surface air
! temperature field (TS) is assumed equivalent to
! the leaf temperature over forests.
! (2 ) PT_15 (REAL*8 ) : Average leaf temperature over the past 15 days
!
! References (see above for full citations):
! ============================================================================
! (1 ) Guenther et al, 1995
! (2 ) Wang et al, 1998
! (3 ) Guenther et al, 1999
! (5 ) Guenther et al, 2004
!
! Notes:
! (1 ) Original code by Dorian Abbot (9/2003). Updated to the latest
! algorithm and modified for the standard code by May Fu (11/2004)
! (2 ) Algorithm is based on Guenther (1999) instead of the latest User's
! Guide, since the User's Guide does not contain sensitivity to !
! temperature in the past 15 days. (tmf, 11/19/04)
! (3 ) Algorithm updated to Users' Guide as of Nov 3, 2004. Sensitivity on
! temperature history is included in DEA from GET_DEA. (tmf, 11/19/04)
! (4 ) All MEGAN biogenic emission are currently calculated using TS from DAO
! met field. TS is the surface air temperature, which should be
! carefully distinguished from TSKIN. (tmf, 11/20/04)
! (5 ) Switch back to Guenther et al. (1999) algorithm and account for !
! tempearture history in HEA. This is accompanied by setting DEA = 1.
! (Alex Guenther, personal communication, 11/25/04)
! (6 ) For consistency, C_T is calculated according to Guenther et al. (1999)
! algorithm. Alex Guenther suggested that we use HEA TYPE 2 algorithm
! in Eq 12 from User's guide. However, this makes incorporation of
! temperature history more difficult. tmf checked the difference
! between Eq 9 and 12 from User's guide and they are essentially the
! same. Therefore we see no need to differentiate the C_T in HEA_T
! and HEA_TL.
!******************************************************************************
!
! Arguments
REAL*8, INTENT(IN) :: T, PT_15
! Local Variables
REAL*8 :: C_T, CT1, CT2
REAL*8 :: E_OPT, T_OPT, X
! Ideal gas constant [J/mol/K]
REAL*8, PARAMETER :: R = 8.314d-3
! Function return value
REAL*8 :: HEA_T
!=================================================================
! GET_HEA_T begins here!
!
! NOTES:
! (1) Algorithm is from Eq 5a, 5b, and 5c in Guenther et al, 1999
! (2) Alex Guenther suggests that we set DEA=1 for now
! (3) E_OPT and T_OPT depend on PT_15 according to Eq 5b and 5c
!=================================================================
! E_OPT: maximum normalized emission capacity
E_OPT = 1.9d0 * EXP( 1.25d-1 * ( PT_15 - 3.01d2 ) )
! T_OPT: temperature at which E_OPT occurs
T_OPT = 3.16d2 + ( 5.0d-1 * ( PT_15 - 3.01d2 ) )
! Energy of activation
CT1 = 76d0
! Energy of deactivation
CT2 = 160d0
! Variable related to temperature
X = ( 1.d0/T_OPT - 1.d0/T ) / R
! C_T: Effect of temperature on leaf BVOC emission, including
! effect of average temperature over previous 15 days, based on
! Eq 5a, 5b, 5c from Guenther et al, 1999.
C_T = E_OPT * CT2 * EXP( CT1 * X ) /
& ( CT2 - CT1 * ( 1.d0 - EXP( CT2 * X ) ) )
! Hourly emission activity = C_T
! Prevent negative values
HEA_T = MAX( C_T, 0d0 )
! Return to calling program
END FUNCTION GET_HEA_T
!------------------------------------------------------------------------------
FUNCTION GET_MEA( CMLAI, PMLAI, T ) RESULT( MEA )
!
!******************************************************************************
! Computes the monthly exchange activity factor (MEA). (tmf, 10/24/05)
! MEA = M_LAI * M_AGE * M_H
!
! Function GET_MEA is called from GET_EMISOP_MEGAN of "megan_mod.f"
!
! Arguments as Input:
! ============================================================================
! (1 ) CMLAI (REAL*8 ) : Current month leaf area index at gridbox
! (2 ) PMLAI (REAL*8 ) : Last month leaf area index at gridbox
! (3 ) T (REAL*8 ) : Number of days between current and previous LAI.
!
! References (see above for full citations):
! ============================================================================
! (3 ) Guenther et al, 1999
! (5 ) Guenther et al, 2004
!
! NOTES:
! (1 ) Original code by Dorian Abbot (9/2003). Modified for the standard
! code by May Fu (11/2004)
! (2 ) Update to publically released (as of 11/2004) MEGAN algorithm and
! modified for the standard code by May Fu (11/2004).
! (3 ) Algorithm is based on the latest User's Guide (tmf, 11/19/04)
!******************************************************************************
!
! Arguments
REAL*8, INTENT(IN) :: T
REAL*8, INTENT(IN) :: CMLAI, PMLAI
! Function return value
REAL*8 :: MEA
! Local Variables
! M_LAI: leaf area factor
REAL*8 :: M_LAI
! M_AGE: leaf age factor
REAL*8 :: M_AGE
! M_H: sensible heat flux factor
REAL*8 :: M_H
! FNEW, ANEW: new foliage that emits negligible amounts of isoprene
REAL*8 :: FNEW
REAL*8, PARAMETER :: ANEW = 1.d-2
! FGRO, AGRO: growing foliage that emits isoprene at low rates
REAL*8 :: FGRO
REAL*8, PARAMETER :: AGRO = 5.d-1
! FMAT, AMAT: mature foliage that emits isoprene at peak rates
REAL*8 :: FMAT
REAL*8, PARAMETER :: AMAT = 1.d0
! FSEN, ASEN: senescing foliage that emits isoprene at reduced rates
REAL*8 :: FSEN
REAL*8, PARAMETER :: ASEN = 3.3d-1
! TI: number of days after budbreak required to induce iso. em.
REAL*8, PARAMETER :: TI = 12.d0
! TM: number of days after budbreak required to reach peak iso. em. rates
REAL*8, PARAMETER :: TM = 28.d0
! Variable for storing T or TM
REAL*8 :: TG
!=================================================================
! GET_MEA begins here!
!=================================================================
!-----------------------
! Compute M_LAI
!-----------------------
M_LAI = 0.49d0 * CMLAI / SQRT( 1.d0 + 0.2d0 * CMLAI*CMLAI )
!-----------------------
! Compute M_AGE
!-----------------------
IF ( T > TM ) THEN
TG = TM
ELSE
TG = T
ENDIF
IF ( CMLAI == PMLAI ) THEN
FMAT = 1.d0
FNEW = 0.d0
FGRO = 0.d0
FSEN = 0.d0
ELSE IF ( CMLAI > PMLAI ) THEN
FSEN = 0.d0
IF ( T > TI ) THEN
FNEW = ( TI / T ) * ( 1.d0 - PMLAI / CMLAI )
FGRO = ( ( TG - TI ) / T ) * ( 1.d0 - PMLAI / CMLAI )
ELSE
FNEW = 1.d0 - ( PMLAI / CMLAI )
FGRO = 0.d0
ENDIF
IF ( T > TM ) THEN
FMAT = ( PMLAI / CMLAI ) +
& ( ( T - TM ) / T ) * ( 1.d0 - PMLAI / CMLAI )
ELSE
FMAT = ( PMLAI / CMLAI )
ENDIF
ELSE
FSEN = ( PMLAI - CMLAI ) / PMLAI
FMAT = 1.d0 - FSEN
FGRO = 0.d0
FNEW = 0.d0
ENDIF
! Age factor
M_AGE = FNEW*ANEW + FGRO*AGRO + FMAT*AMAT + FSEN*ASEN
!--------------------------------------------------------------
! Compute M_H = 1.d0 + 0.03d0 * (H_MONTH - H_SEASON)
!
! where H_MONTH is the daytime sensible heat flux of the past
! month and H_SEASON is the daytime sensible heat flux of the
! entire growing season
!--------------------------------------------------------------
! Disable M_H for now (tmf, 10/24/05)
M_H = 1.d0
!-------------------------------------
! Compute MEA = M_LAI * M_AGE * M_H
!-------------------------------------
! Prevent negative values
MEA = MAX( M_LAI * M_AGE * M_H, 0d0 )
! return to calling program
END FUNCTION GET_MEA
!------------------------------------------------------------------------------
SUBROUTINE GET_AEF
!
!******************************************************************************
! Subroutine GET_AEF reads Annual Emission Factor for all biogenic VOC
! species from disk. Function GET_AEF is called from "main.f"
! (tmf, bmy, 10/24/05)
!
! Reference
! ============================================================================
! (5 ) Guenther et al, 2004
!
! Notes:
! (1 ) Original code by Dorian Abbot (9/2003). Modified for the standard
! code by May Fu (11/2004)
! (2 ) AEF detailed in the latest MEGAN User's Guide (tmf, 11/19/04)
! (3 ) Bug fix (tmf, 11/30/04)
! (4 ) Now reads 1x1 files and regrids to current resolution (bmy, 10/24/05)
!******************************************************************************
!
! References to F90 modules
USE BPCH2_MOD, ONLY : GET_RES_EXT, READ_BPCH2
USE DIRECTORY_MOD, ONLY : DATA_DIR_1x1
USE REGRID_1x1_MOD, ONLY : DO_REGRID_1x1
USE REGRID_A2A_MOD, ONLY : DO_REGRID_A2A !(lzh,02/01/2015)
USE TIME_MOD, ONLY : GET_TS_EMIS
USE GRID_MOD, ONLY : GET_AREA_M2
# include "CMN_SIZE" ! Size parameters
! Local Variables
INTEGER :: I, J, IJLOOP
REAL*4 :: ARRAY(I1x1,J1x1,1)
REAL*8 :: DTSRCE, AREA_M2, FACTOR
CHARACTER(LEN=255) :: FILENAME
! (lzh, 02/01/2015) update regridding
CHARACTER(LEN=255) :: LLFILENAME
REAL*8 :: INGRID(I1x1,J1x1)
REAL*8 :: OUTGRID(IIPAR,JJPAR)
!=================================================================
! GET_AEF begins here!
!=================================================================
! Emission timestep [min]
DTSRCE = GET_TS_EMIS()
!---------------------------------------------
! Read in ISOPRENE Annual Emission Factors
!---------------------------------------------
! 1x1 file name
FILENAME = TRIM( DATA_DIR_1x1 ) //
& 'MEGAN_200510/MEGAN_AEF_ISOP.updated_200708.geos.1x1'
! Echo info
WRITE( 6, 100 ) TRIM( FILENAME )
100 FORMAT( ' - GET_AEF: Reading ', a )
! Read data at 1x1 resolution [ug C/m2/hr]
CALL READ_BPCH2( FILENAME, 'BIOGSRCE', 99,
& 0d0, I1x1, J1x1,
& 1, ARRAY, QUIET=.TRUE. )
! Regrid from 1x1 to the current grid (also cast to REAL*8)
!CALL DO_REGRID_1x1( 'ug C/m2/hr', ARRAY, AEF_ISOP )
! (lzh, 02/01/2015)
! File with lat/lon edges for regridding
LLFILENAME = TRIM( DATA_DIR_1x1) //
& 'MAP_A2A_Regrid_201203/latlon_geos1x1_new.txt'
INGRID = ARRAY(:,:,1)
CALL DO_REGRID_A2A( LLFILENAME, I1x1, J1x1,
& INGRID, OUTGRID, IS_MASS=0 )
AEF_ISOP = OUTGRID
! Loop over longitudes
DO J = 1, JJPAR
! Grid box surface area [m2]
AREA_M2 = GET_AREA_M2( J )
! Conversion factor from [ug C/m2/hr] to [kg C/box]
FACTOR = 1.d-9 / 3600.d0 * AREA_M2 * DTSRCE * 60.d0
! Loop over latitudes
DO I = 1, IIPAR
! Convert AEF_ISOP To [kg C/box]
AEF_ISOP(I,J) = AEF_ISOP(I,J) * FACTOR
ENDDO
ENDDO
!---------------------------------------------
! Read in MONOTERPENE Annual Emission Factors
!---------------------------------------------
! 1x1 file name
FILENAME = TRIM( DATA_DIR_1x1 ) //
& 'MEGAN_200510/MEGAN_AEF_MTP.geos.1x1'
! Echo info
WRITE( 6, 100 ) TRIM( FILENAME )
! Read data at 1x1 resolution [ug C/m2/hr]
CALL READ_BPCH2( FILENAME, 'BIOGSRCE', 99,
& 0d0, I1x1, J1x1,
& 1, ARRAY, QUIET=.TRUE. )
! Regrid from 1x1 to the current grid (also cast to REAL*8)
!CALL DO_REGRID_1x1( 'ug C/m2/hr', ARRAY, AEF_MONOT )
! (lzh, 02/01/2015)
INGRID = ARRAY(:,:,1)
CALL DO_REGRID_A2A( LLFILENAME, I1x1, J1x1,
& INGRID, OUTGRID, IS_MASS=0 )
AEF_MONOT = OUTGRID
! Loop over longitudes
DO J = 1, JJPAR
! Surface area
AREA_M2 = GET_AREA_M2( J )
! Conversion factor from [ug C/m2/hr] to [kg C/box]
FACTOR = 1.d-9 / 3600.d0 * AREA_M2 * DTSRCE * 60.d0
! Loop over latitudes
DO I = 1, IIPAR
! Convert AEF_MONOT to [kg C/box]
AEF_MONOT(I,J) = AEF_MONOT(I,J) * FACTOR
ENDDO
ENDDO
!---------------------------------------------
! Read in MBO Annual Emission Factors
!---------------------------------------------
! 1x1 file name
FILENAME = TRIM( DATA_DIR_1x1 ) //
& 'MEGAN_200510/MEGAN_AEF_MBO.geos.1x1'
! Echo info
WRITE( 6, 100 ) TRIM( FILENAME )
! Read data at 1x1 resolution [ug C/m2/hr]
CALL READ_BPCH2( FILENAME, 'BIOGSRCE', 99,
& 0d0, I1x1, J1x1,
& 1, ARRAY, QUIET=.TRUE. )
! Regrid from 1x1 to the current grid (also cast to REAL*8)
!CALL DO_REGRID_1x1( 'ug C/m2/hr', ARRAY, AEF_MBO )
! (lzh, 02/01/2015)
INGRID = ARRAY(:,:,1)
CALL DO_REGRID_A2A( LLFILENAME, I1x1, J1x1,
& INGRID, OUTGRID, IS_MASS=0 )
AEF_MBO = OUTGRID
! Loop over latitudes
DO J = 1, JJPAR
! Grid box surface area
AREA_M2 = GET_AREA_M2( J )
! Conversion factor from [ug C/m2/hr] to [kg C/box]
FACTOR = 1.d-9 / 3600.d0 * AREA_M2 * DTSRCE * 60.d0
! Loop over longitudes
DO I = 1, IIPAR
! Convert AEF to [kg C/box/step]
AEF_MBO(I,J) = AEF_MBO(I,J) * FACTOR
ENDDO
ENDDO
!---------------------------------------------
! Read in other VOC Annual Emission Factors
!---------------------------------------------
! 1x1 file name
FILENAME = TRIM( DATA_DIR_1x1 ) //
& 'MEGAN_200510/MEGAN_AEF_MTP.geos.1x1'
! Echo info
WRITE( 6, 100 ) TRIM( FILENAME )
! Read data at 1x1 resolution [ug C/m2/hr]
CALL READ_BPCH2( FILENAME, 'BIOGSRCE', 99,
& 0d0, I1x1, J1x1,
& 1, ARRAY, QUIET=.TRUE. )
! Regrid from 1x1 to the current grid (also cast to REAL*8)
!CALL DO_REGRID_1x1( 'ug C/m2/hr', ARRAY, AEF_OVOC )
! (lzh, 02/01/2015)
INGRID = ARRAY(:,:,1)
CALL DO_REGRID_A2A( LLFILENAME, I1x1, J1x1,
& INGRID, OUTGRID, IS_MASS=0 )
AEF_OVOC = OUTGRID
! Loop over latitudes
DO J = 1, JJPAR
! Grid box surface area
AREA_M2 = GET_AREA_M2( J )
! Conversion factor from [ug C/m2/hr] to [kg C/box]
FACTOR = 1.d-9 / 3600.d0 * AREA_M2 * DTSRCE * 60.d0
! Loop over longitudes
DO I = 1, IIPAR
! Convert AEF to [kg C/box/step]
AEF_OVOC(I,J) = AEF_OVOC(I,J) * FACTOR
ENDDO
ENDDO
! Return to calling program
END SUBROUTINE GET_AEF
!------------------------------------------------------------------------------
SUBROUTINE GET_AEF_05x0666
!
!******************************************************************************
! Subroutine GET_AEF reads Annual Emission Factor for all biogenic VOC
! species from disk. Function GET_AEF is called from "main.f". Specially
! constructed to read 0.5 x 0.666 nested grid data for the GEOS-5 nested
! grid simulations. (yxw, dan, bmy, 11/6/08)
!
! Reference
! ============================================================================
! (5 ) Guenther et al, 2004
!
! NOTES:
!******************************************************************************
!
! References to F90 modules
USE BPCH2_MOD, ONLY : GET_RES_EXT, READ_BPCH2
USE DIRECTORY_MOD, ONLY : DATA_DIR_1x1
USE REGRID_1x1_MOD, ONLY : DO_REGRID_1x1
USE REGRID_1x1_MOD, ONLY : DO_REGRID_05x0666
USE TIME_MOD, ONLY : GET_TS_EMIS
USE GRID_MOD, ONLY : GET_AREA_M2
USE DIRECTORY_MOD, ONLY : DATA_DIR
# include "CMN_SIZE" ! Size parameters
! Local Variables
INTEGER :: I, J, IJLOOP
REAL*4 :: ARRAY(I05x0666,J05x0666,1)
REAL*8 :: GEOS_05x0666(I05x0666,J05x0666,1) !(dan)
REAL*8 :: DTSRCE, AREA_M2, FACTOR
CHARACTER(LEN=255) :: FILENAME
!=================================================================
! GET_AEF begins here!
!=================================================================
! Emission timestep [min]
DTSRCE = GET_TS_EMIS()
!---------------------------------------------
! Read in ISOPRENE Annual Emission Factors
!---------------------------------------------
! 1x1 file name
FILENAME = TRIM( DATA_DIR ) //
& 'MEGAN_200510/MEGAN_AEF_ISOP.geos.05x0666'
! Echo info
WRITE( 6, 100 ) TRIM( FILENAME )
100 FORMAT( ' - GET_AEF: Reading ', a )
! Read data at 1x1 resolution [ug C/m2/hr]
CALL READ_BPCH2( FILENAME, 'BIOGSRCE', 99,
& 0d0, I05x0666, J05x0666,
& 1, ARRAY, QUIET=.TRUE. )
! Cast to REAL*8 before regridding
GEOS_05x0666(:,:,1) = ARRAY(:,:,1)
! Regrid from 1x1 to the current grid (also cast to REAL*8)
CALL DO_REGRID_05x0666( 1, 'ug C/m2/hr', GEOS_05x0666, AEF_ISOP )
! Loop over longitudes
DO J = 1, JJPAR
! Grid box surface area [m2]
AREA_M2 = GET_AREA_M2( J )
! Conversion factor from [ug C/m2/hr] to [kg C/box]
FACTOR = 1.d-9 / 3600.d0 * AREA_M2 * DTSRCE * 60.d0
! Loop over latitudes
DO I = 1, IIPAR
! Convert AEF_ISOP To [kg C/box]
AEF_ISOP(I,J) = AEF_ISOP(I,J) * FACTOR
ENDDO
ENDDO
!---------------------------------------------
! Read in MONOTERPENE Annual Emission Factors
!---------------------------------------------
! 1x1 file name
FILENAME = TRIM( DATA_DIR ) //
& 'MEGAN_200510/MEGAN_AEF_MTP.geos.05x0666'
! Echo info
WRITE( 6, 100 ) TRIM( FILENAME )
! Read data at 1x1 resolution [ug C/m2/hr]
CALL READ_BPCH2( FILENAME, 'BIOGSRCE', 99,
& 0d0, I05x0666, J05x0666,
& 1, ARRAY, QUIET=.TRUE. )
! Cast to REAL*8 before regridding
GEOS_05x0666(:,:,1) = ARRAY(:,:,1)
! Regrid from 1x1 to the current grid (also cast to REAL*8)
CALL DO_REGRID_05x0666( 1,'ug C/m2/hr', GEOS_05x0666, AEF_MONOT )
! Loop over longitudes
DO J = 1, JJPAR
! Surface area
AREA_M2 = GET_AREA_M2( J )
! Conversion factor from [ug C/m2/hr] to [kg C/box]
FACTOR = 1.d-9 / 3600.d0 * AREA_M2 * DTSRCE * 60.d0
! Loop over latitudes
DO I = 1, IIPAR
! Convert AEF_MONOT to [kg C/box]
AEF_MONOT(I,J) = AEF_MONOT(I,J) * FACTOR
ENDDO
ENDDO
!---------------------------------------------
! Read in MBO Annual Emission Factors
!---------------------------------------------
! 1x1 file name
FILENAME = TRIM( DATA_DIR ) //
& 'MEGAN_200510/MEGAN_AEF_MBO.geos.05x0666'
! Echo info
WRITE( 6, 100 ) TRIM( FILENAME )
! Read data at 1x1 resolution [ug C/m2/hr]
CALL READ_BPCH2( FILENAME, 'BIOGSRCE', 99,
& 0d0, I05x0666, J05x0666,
& 1, ARRAY, QUIET=.TRUE. )
! Cast to REAL*8 before regridding
GEOS_05x0666(:,:,1) = ARRAY(:,:,1)
! Regrid from 1x1 to the current grid (also cast to REAL*8)
CALL DO_REGRID_05x0666( 1,'ug C/m2/hr',GEOS_05x0666, AEF_MBO )
! Loop over latitudes
DO J = 1, JJPAR
! Grid box surface area
AREA_M2 = GET_AREA_M2( J )
! Conversion factor from [ug C/m2/hr] to [kg C/box]
FACTOR = 1.d-9 / 3600.d0 * AREA_M2 * DTSRCE * 60.d0
! Loop over longitudes
DO I = 1, IIPAR
! Convert AEF to [kg C/box/step]
AEF_MBO(I,J) = AEF_MBO(I,J) * FACTOR
ENDDO
ENDDO
!---------------------------------------------
! Read in other VOC Annual Emission Factors
!---------------------------------------------
! 1x1 file name
FILENAME = TRIM( DATA_DIR ) //
& 'MEGAN_200510/MEGAN_AEF_MTP.geos.05x0666'
! Echo info
WRITE( 6, 100 ) TRIM( FILENAME )
! Read data at 1x1 resolution [ug C/m2/hr]
CALL READ_BPCH2( FILENAME, 'BIOGSRCE', 99,
& 0d0, I05x0666, J05x0666,
& 1, ARRAY, QUIET=.TRUE. )
! Cast to REAL*8 before regridding
GEOS_05x0666(:,:,1) = ARRAY(:,:,1)
! Regrid from 1x1 to the current grid (also cast to REAL*8)
CALL DO_REGRID_05x0666( 1,'ug C/m2/hr', GEOS_05x0666, AEF_OVOC )
! Loop over latitudes
DO J = 1, JJPAR
! Grid box surface area
AREA_M2 = GET_AREA_M2( J )
! Conversion factor from [ug C/m2/hr] to [kg C/box]
FACTOR = 1.d-9 / 3600.d0 * AREA_M2 * DTSRCE * 60.d0
! Loop over longitudes
DO I = 1, IIPAR
! Convert AEF to [kg C/box/step]
AEF_OVOC(I,J) = AEF_OVOC(I,J) * FACTOR
ENDDO
ENDDO
! Return to calling program
END SUBROUTINE GET_AEF_05x0666
!------------------------------------------------------------------------------
SUBROUTINE INIT_MEGAN
!
!******************************************************************************
! Subroutine INIT_MEGAN allocates and initializes the T_DAY, T_15,
! T_15_AVG, and AEF_* arrays. (dsa, tmf, bmy, 10/24/05, 11/6/08)
!
! NOTES:
! (1 ) Change the logic in the #if block for G4AHEAD. (bmy, 12/6/05)
! (2 ) Bug fix: skip Feb 29th if GCAP (phs, 9/18/07)
! (3 ) Now call GET_AEF_05x0666 for GEOS-5 nested grids (yxw,dan,bmy, 11/6/08)
! (4 ) adj_group: Add CHK_T_DAY and CHK_T_15_DAY (dkh, 01/23/10)
!******************************************************************************
!
! References to F90 modules
USE A3_READ_MOD
USE FILE_MOD, ONLY : IU_A3
USE JULDAY_MOD, ONLY : CALDATE
USE ERROR_MOD, ONLY : ALLOC_ERR
USE LAI_MOD, ONLY : INIT_LAI
USE LOGICAL_MOD, ONLY : LUNZIP
USE TIME_MOD, ONLY : GET_FIRST_A3_TIME, GET_JD
USE TIME_MOD, ONLY : ITS_A_LEAPYEAR, YMD_EXTRACT
USE GEOSFP_READ_MOD, ONLY : GEOSFP_READ_A1 ! (lzh, 04/10/2014)
! adj_group
USE LOGICAL_ADJ_MOD, ONLY : LADJ
# include "CMN_SIZE" ! Size parameters
! Local Variables
LOGICAL :: GCAP_LEAP
INTEGER :: AS
INTEGER :: DATE_T15b(2)
INTEGER :: NYMD_T15b, NHMS_T15b, NYMD_T15, NHMS_T15
INTEGER :: I, J, G4AHEAD
INTEGER :: THISYEAR, THISMONTH, THISDAY, BACK_ONE
REAL*8 :: JD_T15b, JD_T15
!=================================================================
! INIT_MEGAN begins here!
!=================================================================
#if defined( MERRA ) || defined( GEOS_FP )
DAY_DIM = 24 ! # of 1-hr periods/day
#else
DAY_DIM = 8 ! # of 3-hr periods/day
#endif
! Allocate arrays
ALLOCATE( T_DAY( IIPAR, JJPAR, DAY_DIM ), STAT=AS )
IF ( AS /= 0 ) CALL ALLOC_ERR( 'T_DAY' )
T_DAY = 0d0
ALLOCATE( T_15( IIPAR, JJPAR, NUM_DAYS ), STAT=AS )
IF ( AS /= 0 ) CALL ALLOC_ERR( 'T_15' )
T_15 = 0d0
ALLOCATE( T_15_AVG( IIPAR, JJPAR ), STAT=AS )
IF ( AS /= 0 ) CALL ALLOC_ERR( 'T_15_AVG' )
T_15_AVG = 0d0
ALLOCATE( AEF_ISOP( IIPAR, JJPAR ), STAT=AS )
IF ( AS /= 0 ) CALL ALLOC_ERR( 'AEF_ISOP' )
AEF_ISOP = 0d0
ALLOCATE( AEF_MONOT( IIPAR, JJPAR ), STAT=AS )
IF ( AS /= 0 ) CALL ALLOC_ERR( 'AEF_MONOT' )
AEF_MONOT = 0d0
ALLOCATE( AEF_MBO( IIPAR, JJPAR ), STAT=AS )
IF ( AS /= 0 ) CALL ALLOC_ERR( 'AEF_MBO' )
AEF_MBO = 0d0
ALLOCATE( AEF_OVOC( IIPAR, JJPAR ), STAT=AS )
IF ( AS /= 0 ) CALL ALLOC_ERR( 'AEF_OVOC' )
AEF_OVOC = 0d0
! Get annual emission factors for MEGAN inventory
!#if defined( GRID05x0666 ) !lzhang (06/28/2012)
! CALL GET_AEF_05x0666 ! GEOS-5 nested grids only !lzhang
!#else !lzhang
CALL GET_AEF ! Global simulations and nested-grid simualtions !lzhang
!#endif !lzhang
! Initialize LAI arrays
CALL INIT_LAI
!=================================================================
! Read A3 fields for the 15 days before the start of the run
! This section has been added so that the previous 15 day temp.
! average can be calculated for biogenic emissions. Do only if
! MEGAN biogenic emissions must be calculated.
!=================================================================
! Get the first time for reading A-3 files
DATE_T15b = GET_FIRST_A3_TIME()
NYMD_T15b = DATE_T15b(1)
NHMS_T15b = DATE_T15b(2)
! Astronomical Julian Date of the A3 file at start of run
JD_T15b = GET_JD( NYMD_T15b, NHMS_T15b )
#if defined( GEOS_3 )
! For GEOS-1, GEOS-STRAT, GEOS-3, the A-3 fields are timestamped
! by ending time: 00Z, 03Z, 06Z, 09Z, 12Z, 15Z, 18Z, 21Z.
G4AHEAD = 0
#elif defined( MERRA ) || defined( GEOS_FP )
!!! (lzh, 04/10/2014)
! For MERRA and GEOS-5.7.x, the A1 fields are timestamped
! on the half-hours: 00:30, 01:30, 02:30, ... 23:30
G4AHEAD = 003000
#else
! For GEOS4, the A-3 fields are timestamped by the center of
! the 3-hr period: 01:30Z, 04:30Z, 07:30Z, 10:30Z,
! 13:30Z, 16:30Z, 19:30Z, 22:30Z
G4AHEAD = 13000
#endif
!------------------------------------------------------
! GCAP: Need to test if it's leap year (phs, 9/18/07)
!------------------------------------------------------
! Initialize
THISDAY = 0
GCAP_LEAP = .FALSE.
BACK_ONE = 0
#if defined( GCAP )
! Extract year, month, day from NYMD_T15b
CALL YMD_EXTRACT( NYMD_T15b, THISYEAR, THISMONTH, THISDAY )
! If it's a leap year then set appropriate variables
IF ( ITS_A_LEAPYEAR( THISYEAR, FORCE=.TRUE. ) .AND.
& THISMONTH == 3 .AND.
& THISDAY < 16 ) THEN
GCAP_LEAP = .TRUE.
BACK_ONE = 1
ENDIF
#endif
! Remove any leftover A-3 files in temp dir (if necessary)
IF ( LUNZIP ) THEN
CALL UNZIP_A3_FIELDS( 'remove all' )
ENDIF
! Loop over 15 days
DO I = 15+BACK_ONE, 1, -1
! Skip February 29th for GCAP (phs, 9/18/07)
IF ( GCAP_LEAP .AND. I == THISDAY ) CYCLE
! Julian day at start of each of the 15 days
JD_T15 = JD_T15b - DBLE( I ) * 1.d0
! Call CALDATE to compute the current YYYYMMDD and HHMMSS
CALL CALDATE( JD_T15, NYMD_T15, NHMS_T15 )
! Unzip A-3 files for archving (if necessary)
IF ( LUNZIP ) THEN
CALL UNZIP_A3_FIELDS( 'unzip foreground', NYMD_T15 )
ENDIF
! Loop over 3h periods during day
c$$$ DO J = 0, 7
c$$$
c$$$ ! Open A-3 fields
c$$$ CALL OPEN_A3_FIELDS( NYMD_T15, 30000*J + G4AHEAD )
c$$$
c$$$ ! Read A-3 fields from disk
c$$$ CALL GET_A3_FIELDS( NYMD_T15, 30000*J + G4AHEAD )
c$$$
c$$$ ! Update hourly temperatures
c$$$ CALL UPDATE_T_DAY
c$$$ ENDDO
!!! geos-fp (lzh, 04/10/2014)
DO J = 0, DAY_DIM-1
#if defined( GEOS_FP )
!-----------------------------
! GEOS-5.7.x met fields
! Sfc temp is hourly data
!-----------------------------
CALL GEOSFP_READ_A1( NYMD_T15, 010000*J + G4AHEAD )
#else
! Open A-3 fields
CALL OPEN_A3_FIELDS( NYMD_T15, 30000*J + G4AHEAD )
! Read A-3 fields from disk
CALL GET_A3_FIELDS( NYMD_T15, 30000*J + G4AHEAD )
#endif
! Update hourly temperatures
CALL UPDATE_T_DAY
ENDDO
! Compute 15-day average temperatures
CALL UPDATE_T_15_AVG
! Remove A-3 file from temp dir (if necessary)
IF ( LUNZIP ) THEN
CALL UNZIP_A3_FIELDS( 'remove date', NYMD_T15 )
ENDIF
ENDDO
! Close the A-3 file
CLOSE( IU_A3 )
! Remove any leftover A-3 files in temp dir
IF ( LUNZIP ) THEN
CALL UNZIP_A3_FIELDS( 'remove all' )
ENDIF
! adj_group: add checkpointing
IF ( LADJ ) THEN
ALLOCATE( CHK_T_15_AVG( IIPAR, JJPAR, 1 ), STAT=AS )
IF ( AS /= 0 ) CALL ALLOC_ERR( 'CHK_T_15_AVG' )
CHK_T_15_AVG = 0.d0
ALLOCATE( CHK_T_DAY( IIPAR, JJPAR, DAY_DIM ), STAT=AS )
IF ( AS /= 0 ) CALL ALLOC_ERR( 'CHK_T_DAY' )
CHK_T_DAY = 0.d0
ENDIF
! Return to calling program
END SUBROUTINE INIT_MEGAN
!------------------------------------------------------------------------------
! adj_group: Add following routines to allow for
! checkpointing of the running average
! surface temperatures needed to recalculate
! MEGAN emissions during adjoint integration.
! (dkh, 01/23/10)
!------------------------------------------------------------------------------
FUNCTION GET_T_15_AVG( I, J ) RESULT ( T )
!
!******************************************************************************
! Function GET_T_15_AVG returns the value of the 15 day average temperature
! needed for calculating MEGAN emissions (dkh, 01/22/10).
!
! NOTES:
!******************************************************************************
!
! Arguments
INTEGER, INTENT(IN) :: I, J
! Function results
REAL*8 :: T
!=================================================================
! GET_T_15_AVG begins here!
!=================================================================
T = T_15_AVG(I,J)
! Return to calling program
END FUNCTION GET_T_15_AVG
!------------------------------------------------------------------------------
FUNCTION GET_T_DAY( I, J, L ) RESULT ( T )
!
!******************************************************************************
! Function GET_T_DAY returns the daily average surface temperature
! needed for calculating MEGAN emissions (dkh, 01/22/10).
!
! NOTES:
!******************************************************************************
!
! Arguments
INTEGER, INTENT(IN) :: I, J, L
! Function results
REAL*8 :: T
!=================================================================
! GET_T_DAY begins here!
!=================================================================
T = T_DAY(I,J,L)
! Return to calling program
END FUNCTION GET_T_DAY
!------------------------------------------------------------------------------
SUBROUTINE UPDATE_T_DAY_ADJ
!
!******************************************************************************
! Subroutine UPDATE_T_DAY_ADJ must be called every time the A-3 fields are
! updated. We load in checkpointed values of T_DAY. (dkh, 01/23/10)
!
! NOTES:
!******************************************************************************
!
# include "CMN_SIZE" ! Size parameters
! Local Variables
INTEGER :: I, J, D
!=================================================================
! UPDATE_T_DAY_ADJ begins here!
!=================================================================
!$OMP PARALLEL DO
!$OMP+DEFAULT( SHARED )
!$OMP+PRIVATE( I, J, D )
DO D = 1, DAY_DIM
DO J = 1, JJPAR
DO I = 1, IIPAR
! Reload
T_DAY(I,J,D) = CHK_T_DAY(I,J,D)
ENDDO
ENDDO
ENDDO
!$OMP END PARALLEL DO
! return to calling program
END SUBROUTINE UPDATE_T_DAY_ADJ
!------------------------------------------------------------------------------
SUBROUTINE UPDATE_T_15_AVG_ADJ
!
!******************************************************************************
! Subroutine UPDATE_T_15_AVG should be called at the beginning of each day.
! It reloads the T_15_AVG array from checkpointed values. (dkh, 01/23/10)
!
! NOTES:
!******************************************************************************
!
# include "CMN_SIZE" ! MAXIJ
! Local Variables
INTEGER :: I, J
!=================================================================
! UPDATE_T_15_AVG_ADJ begins here!
!=================================================================
! Loop over grid boxes
!$OMP PARALLEL DO
!$OMP+DEFAULT( SHARED )
!$OMP+PRIVATE( I, J )
DO J = 1, JJPAR
DO I = 1, IIPAR
! Reload from checkpointed values
T_15_AVG(I,J) = CHK_T_15_AVG(I,J,1)
ENDDO
ENDDO
!$OMP END PARALLEL DO
! Return to calling program
END SUBROUTINE UPDATE_T_15_AVG_ADJ
!------------------------------------------------------------------------------
!------------------------------------------------------------------------------
SUBROUTINE CLEANUP_MEGAN
!
!******************************************************************************
! Subroutine CLEANUP_MEGAN deallocates all allocated arrays at the
! end of a GEOS-CHEM model run. (dsa, tmf, bmy, 6/17/03, 10/24/05)
!
! NOTES:
! (1 ) Add CHK_T_DAY, CHK_T_15_AVG (dkh, 01/23/10)
!******************************************************************************
!
!=================================================================
! CLEANUP_MEGAN begins here!
!=================================================================
IF ( ALLOCATED( T_DAY ) ) DEALLOCATE( T_DAY )
IF ( ALLOCATED( T_15 ) ) DEALLOCATE( T_15 )
IF ( ALLOCATED( T_15_AVG ) ) DEALLOCATE( T_15_AVG )
IF ( ALLOCATED( AEF_ISOP ) ) DEALLOCATE( AEF_ISOP )
IF ( ALLOCATED( AEF_MONOT ) ) DEALLOCATE( AEF_MONOT )
IF ( ALLOCATED( AEF_MBO ) ) DEALLOCATE( AEF_MBO )
IF ( ALLOCATED( AEF_OVOC ) ) DEALLOCATE( AEF_OVOC )
! adj_group
IF ( ALLOCATED( CHK_T_DAY ) ) DEALLOCATE( CHK_T_DAY )
IF ( ALLOCATED( CHK_T_15_AVG ) ) DEALLOCATE( CHK_T_15_AVG )
! Return to calling program
END SUBROUTINE CLEANUP_MEGAN
!------------------------------------------------------------------------------
! End of module
END MODULE MEGAN_MOD
Reference in New Issue View Git Blame Copy Permalink